How to identify plastic??

Folks -
Some time ago, while at the surplus yard, I picked up a number of pieces of
plastic plate for future use as jigs, thingies, whatever...
Anyway, I have a scrap about 12" square, and would like to use it for a
router support in a table. I am sure it's strong enough, but was wondering
how I might be able to identify specifically what I have.
Lexan, Acrylic, Neosporin... that one that's really rare... Unobtainium...
How do you tell, and what properties are better for certain projects - ie
guards.... I wouldn't want to use the stuff that shatters...
Several pieces that I have are clear, some are tinted, one is almost black.
Any ideas or links?
BTW, I went out and gave my Tablesaw a hug this morning, after all those
flame wars about the wire wheel...
TIA,
John

Log in

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.